Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
chung chee » chung hee, chang chen, chung chi
yang ying » yang yang, yang jing, huang ying
ying yang » yang yang, yin yang, ying chang
yulu chen » yu chen
eng chung » fung chung, kung chung, tung chung
chan eng » chan fong, chan kang, chan ming

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: yang ying yang ((yulu chen) or (yuan cheng)) chan eng chung chee ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang ying yang ((yulu chen) OR (yuan cheng)) chan eng chung chee ;*.